Lock and latch.



No. 757,529. PATENTED M1149, 1,904.

H. G. VOIGHT. 1.00K AND LATCH.

APPLIUATION. FILED JAN. 19, 1904.

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N0. 757,529. PATENTED APR. 19, 1904. H. G; VOIGHT. LOCK AND LATCH.

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H. GQ VOIGHT. ,LOCK AND LATCH.

APPLICATION FILED JAN.`19, 1904.

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UNITED STATES` Patented April 19, 1904.

PATENT OEEICE.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT, .ASSIGNOR TO RUSSELL t ERVVIN MANUFACTURING COMPANY, OF NEW BRITAIN,

CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOOK D LATCH SPECIFICATION forming part of Letters Patent No. 757,529, dated April 19, 1904.

Application filed January 19, 1904.

ToY a/ZZ wil/tono t may concern:

Beitknown that I, HENRY G. Voleur, a citizen of the United States, residing at New Brit ain, in the county of Hartford, State of Con# neoticut, have invented certain new and useful Improvements in Locks and Latches, of which the following is a full, clear, and exact description. l

My invention relates to improvements in I o locks and latches, the object thereof being simplicity and economy of construction and effectiveness'and durability in operation. In accomplishing this object I have been able to produce a structure which contains comparatively few operative parts, and those parts are so arranged and assembled that disorganizetion is well-nigh impossible.

In the drawings, Figure 1 is a plan view of my improved lock, part thereof being shown in section. Fig. 2 is an elevation of the inside of the uppermost section shown in Fig. 1. Fig. 3 is a horizontal section of the parts shown in Fig. 2. Fig. L is a vertical section of all the parts on the plane of the line 4 4:, Fig. 2. Fig. 5 is a view taken on the sectionline 5 5, Fig. 3,- and looking in the direction of the arrows. Fig. 6 is a view taken on the section-line 6 6, Fig. 3, and looking inthe direction of the arrows.

1 2 are escutcheon-plates. Y Y

3 4 are knobs, the Shanks of which are mounted in any suitable manner on the plates 1 2, respectively.

5 is a latch bolt or head which in the form shown is pivoted at 51 on an end plate 6.'

61 is a removable extension of the plate 6, said extension being designed to lill the space between the end plate 6 and the escutcheonplate 1 in case of a wide adjustment of the 4G plates 1 and 2. This lock is adapted to be inserted in a notch cut in the stileof a door, and the parts thereofI are so arranged that they may be adjusted todoors of diiferent thicknesses.

By means of the removable end plate 61 the escutcheon-plates 1 andA 2 may be spread apart very considerably' and the lock applied to a door of very substantial thickness. To edect Serial No. 189,666. (No model.)

this separation or adjustment of the plates 1 2, .I have provided ya slidable connection which Aranged, extensions 1EL and 2, secured to the plates 1 and 2, respectively, and by means of Lwhich the said plates are firmly -held in parallel positions, but allowing said plates, never- Vtireless, to slide to and fro so much as may be necessary to secure any desired adjustment of spacing. The removable plate 61 has an eX- 60 "tension 61u, which lies to the rear of the faceveon-plates-for example, the plate 2. The vforward end of the plate 7 is bent inwardly and hooked, as at 71', to engage a pin 52 on the latch bolt or head 5. The retractive action of the latch boltor head 5 is eieoted by drawing bac-k the slide 7 in the manner hereinafter described. 8 is what' is termed an easy-spring. This spring is mounted on pin 81, and one end of it bears against the back dof the latch 5, normally pressing the latch outwardly into its operative position. There is a space in the back of the latch-bolt 5 for- Ward of the hooked end of the slide 7 of sufiicient size to permit the latch bolt or head to be pushed back independently of the slide 7 as, for example, when the door is being closed and the bolt or head of the look encounters the strike-plate. (Not shown.)

The mechanism for operating the-latch-slide comprises a spring v9, -Which may be 'mounted on the inner recessed wall of the escutcheonplate 2, the free end of the spring bearing against the slide 7 to normally press it forward. The means for retracting the latch- 4, or vice versa.

slide 7 comprises a roll-back 10, which has the usualprojecting arms arranged to engage shoulders 72 72 of the latch-slide 7. The rollback 10 is carried in Y the usual manner in notches in the inner end of` the outer knob-V shank 41, so that when the outer knob is rotated it will, through the medium of the rollback, retract the slide 7 and with it the latch bolt or head 5. The connection for the inner knob with the latch-slide comprises a removable spindle 11, which is irregular in crosssection and arranged to take into a corre-4 sponding recess or cavity in the knob 3. The opposite end of the spindle 11 is reduced in size and forms an irregular projection 11, which enters a corresponding pocket 12 in the second roll-back 12. This second roll-Y back 12 has a round hub 12b and a projection 12c at the end thereof, which takes into a similar opening in the hub 13 of a lock 14, which lock is preferably of the cylinder type and mounted in the knob 4. rIhis second rollback 12 has the usual arms adapted to engage the shoulders 72 72 of the latch-slide 7.

From the foregoing it will be apparent that when the inner knob 3 is rotated the spindle 11 will rotate and that this spindle will in turn rotate the roll-back 12, and thus retract the latch-slide 7. This rotation of the rollback l2 is entirely independent of the rollback 10. It thus appears that while the knobs 3 4 are arranged in line they are entirely independent and operateindependently the single latch-slide 7. The knobs are independently rotatable,'because the rotation of the spindle 1l by knob 3 does not rotate knob It is true that the rotation of the spindle 11 will rotate the roll-back 12, but the squared extremity 12c of the roll-back hub 12b may take a loose fit in the capof the cylinder-plug, as best seenin Fig. 6. This loose t will permit the said roll-back-12 to rotate to a suiicient extent to retract the slide without rotating the hub or plug of the lock 14. When the outer knob 4 is lockedagainst rotation and it is desired to unlock the door from the outside, a proper key inserted in the cylinder-lock will permit the cap 'to be rotated to a point where it engages with the squared extremity 12C of the roll-back hub 12b. A further movement of the key will thereupon rotate or rock the roll-back and retract the slide. Since the lock is adjustable to and fro, I deem it advisable to provide a means which will normally press the spindle 11 into engagement with the roll-back 12, so that accidental disengagement of these` parts may be prevented. This I accomplish in a simple and effective manner by means of a spring 11b, carried at the end of the spindle 11 within the knob 3. If desired, a pin 31 may be fixed within the knob 3 to center the spring 11b. Any well-known means may be used in securing the knobs to the escutcheon-plates 1 2, so that the knobs will take their bearings therein, be

supported thereby, and freely rotate therein. In the preferredform the .knob 3 is secured by what is termed in the trade a screwless connection. This may comprise a divided knob-shank clamped together by a collar 32, which overhangs one section of the knob-shank and screws on the other section of the knobshank. This will be seen most clearly in Fig. 4. As these screw-less knob-Shanks are well known, further detailed description is deemed unnecessary. One advantagev of providing a screwless knob-shank for the knob 3 is that should the user desire to apply the lock to the door without separating the escutcheon-plates 1 2 and the associated parts he may do so by removing the knob 3 and withdrawing the spindle 11, the usual adjusting-screws 15 15 being removable at any time. When this mode of operation is pursued, a small notch is cut in the stile ofthe door` suiiicient to receive those parts of the lock closely adjacent to the end plate 6. The usual holes may be then bored through the door to receive the screws 15 15. A hole in line with the iinal position of the spindle 11 should also be bored. The

door is then ready for the lock.`

Then the plates 1 and 2 are adjusted in place, the spindle 11 may be inserted through the passage in the still-attached connection of the outer knobshank, thence through the hole in the door and into the roll-back. 12. The inner knob 3 may then be attached by means of the collar 32. The parts of the lock immediately to the rear of the face-plate 6, .and to receive which the notch is cut in the stile of a door, may include a locking device by which the outer knob may be locked against rotation. This locking mechanism may be controlled by a thumb-turn 16, accessible on the inner side of the door. 16*L is a spindle for said thumb-turn. This spindle takes into a hub 17, mounted in any convenient way close to the rear of the faceplate 6.

Thel operation of this latch mechanism may The inner end of the hub 17 may carry a pin 17, which projects into a slot 18'l on the bolt 1 8. By rotating the hub 17 the bolt 18 will slide to and fro. In theV position shown in solid lines, Fig. 5, this bolt 18 is retracted. In the position shown in dotted lines this bolt 18 is advanced to its locking position, in which` it will be seen, said bolt engages a third arm 10 of the roll-back 10, preventing rotation. Since theroll-back 10 is carried by the knob 4, it is obvious that if the roll-back cannot be rotated the knob 4 cannot, and hence the latch 5 cannot be retracted from the outside by this means. To provide a means, however, for unlocking the door from the outside under such conditions, the cylinder-lock is availed of. When apsuitable key is inserted, the operative parts of the lock 14 may be turned or rotated independently of the knob 4, which rotation will, by reason of the engagement between the IOO IIO

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lock-hub 13 and the roll-back 12, cause the latter to be rotated, and hence cause the latchslide 7 and latch-bolt to be retracted.

A simple means for holding all of the parts in place at the inner side of the escutcheonplate 2 may comprise a clip 19, which in operation may engage shoulders 2O 2O on the inner side of the escutcheon-plate 2, the body of said clipoverstanding the two roll-backs notch in the stile only to a depth suiiicient to receive the spindle 16a and hub 17 and may bore a hole transversely through the door to receive the spindle l1, which spindle may be inserted after the ,lock has been applied by passing the same through the knob-shank of the knob 3, the latter being removed to permit of said introduction of said spindle. Of course if it is immaterial whether the door is more deeply notched than just referred to the said notch might be cut back far enough to receive the spindle 11, which would obviate the necessity of introducing the spindle after the' lock is in place.

It will be observed that an important advantage of providing the removable extensionplate 61 resides in the fact -that when the thickness of the door to which the lock is to be applied is ascertained an extension-plate of suitable length, the end of which will not overstand the surface of the inside plate 1, may be applied. Stock vdoors vary in thickness by quarters of inches. Hence these eXtension-plates 61 may be made of standard sizes varying by this fraction of an inch, and asuitable extensionplate may be inserted, so as to cover the forward edge of plate 1, but not overstand the surface of the same. The parts when thus assembled and applied to the door sides of a door, a knob carried by each of said plates,4 said knobs being in alinement, alatchslide carried by one of said plates, two roll- 'backs coacting with said slide, one of said roll-backs being operated by one of said knobs the other roll-back being operated by the other knob, said roll-backs being concentrically rotatable.

3. In a device of the character described, two plates arranged'to be secured to opposite sides of a door, a knob'carried by each of said plates said knobs being in alinement, alatchslide carried by one ofsaid plates, two rollbacks coacting with said slide, one 'of said roll-backs being operated by one of said knobs the other roll-back being operated by the other knob, one of said roll-backs being mounted to rotate in the other roll-back.

4. In a device of the character described, two plates arranged to be secured to opposite sides of a door, a knob carriedby each of said plates said knobs being in alinement, a latchslide carried by one of said plates, two rollbacks coacting with said slide, one of said roll-backs being operated by one of said knobs the other roll-back being operated by the other TOO the other roll-back being operated by the other knob, and means to lock one of the knobs against rotation, and a key-controlled mechanism located on the same side as said locked knob for retracting said latch-slide independently of either knob, said key-controlled means coacting with the rollback which is actuated by the unlocked knob.

6. In a device of the character described, two adjustably-connected plates arranged to be secured to opposite sides of a door, a knob carried by each of said plates said knobs being in alinement, a latch-slide carried by one of said plates, two roll -backs coacting with said slide, one of said roll-backs being operated by one of said knobs the other roll-back being operated by the other knob, the means of connection between one knob and one rollback being adjustable.

7. In a device of the character described, two plates arranged vto be secured to opposite sides of a door, a knob carried by each of said plates said knobs being in alineme'nt, a latchslide carried by one of said plates, two rollbacks coacting with said slide, one of said rollbacks being operated byl one of said knobs the other roll-back being operated by IIO fr l '757,529

the other knob, and means to engage one of said rollbacks and lock one of the knobs against rotation, and a key-controlled mechanism located on the same side as said locked knob for retracting said latch-slide independently of either knob.

8. In a device of the character described, two plates arranged to be secured to opposite sides of a door, a knob carried by each of said plates, a spindle spanning the space between and in line with both of said knobs, a latchslide carried by one of said plates, two rollbacks coacting with said slide, one of said roll-backs being operated by one of said knobs the other roll-back being operated by the other knob.

9. In a device of the character described, a plate arranged to be ittedto the outside oiv a door, another plate arranged to be tted to the inside of a door, a knob carried by each of said plates, a spindle spanning the space between said knobs and in line therewith one of said plates carrying complete latch-operating mechanism arranged on one side of the door and covered by said plate, a latch, the said parts being so arranged that the space between said knobs may be varied without disconnecting either knob from said spindle.

10. In a device of the character described, two plates, a knob carried by each plate said knobs being in alinement, a latch-slide carried by one of said plates, two independentlyrotatable roll-backs carried by the same plate and coacting with said slide, means of connection between one knob and one of said rollbacks and an extensible extension between the other knob and the other roll-back whereby said plates may be applied to doors of different thicknesses without disconnecting either knob from said roll-backs.

11. In a device of the character described, a pair of plates adjustab'ly connected at one end whereby said plates may be moved toward or away from each other but are held in parallelism, a latch-slide carried by one of said plates, a latch bolt or head adjacent to the connection between said plates, two roll-backs Vcarried by. one of the plates and coacting with the slide and arranged to operate the same independently, one of said roll-backs being connected with one knob, the other roll-back being connected with the other knob through the slidable and rotatable spindle, and means to yeldingly press said spindle into operative relation with its roll-back.

12. In a device of the character described, a pair of plates adjustably secured together at one end, a knob carried by each plate, a cylinder-,lock carried by one of said knobs, a spindle spanning the space between said knobs, said spindle making a connection with said cylinder-lock and at one end and withV the optwo plates arranged to be placed on opposite sides ofa door, a knob carried by each plate, a roll-back carried by one of said knobs, a second roll-back connected with the other knob said connection comprising a spindle said roll-backs being concentric, one of said roll-backs having a hub passingthrough the other roll-back, a key-operating means arranged within the first-mentioned knob and connected with said last-mentioned roll-back whereby one of the roll-backs may be rotated from either side of the door and means `for locking against rotation the knob containing the key-controlled mechanism, a latch bolt or head and a latch-slide connected therewith and arranged to be engaged by both of said roll-backs.

14. In a device of the character described, a pair of side plates adjustably connected to each other at one end said adjustable connection including an end plate carried by one of said side plates and an extension-piece detachably connected to said end plate and arranged to overlie the adjacent edge of the opposite side plate, and means for holding said A extension-piece in place when the parts are assembled. n

15. In a device, of the character described, a pair of side plates adjustably connected to each other at one end said adjustable connection including an end plate carried by one of said side plates and an extension-piece detachably connected to said end plate and arranged to overlie the adjacent edge of the opposite side plate, and means for holding said extension-piece in place when the parts are assembled, said extension lying flush on its outer surface with the face of said face-plate.

16. In a device of the character described, a pair of side plates adjustably connected to each other at one end said adjustable connection including an end plate carried by one of said side plates and an extension-piece detachably connected to said end plate and arranged to overlie the adjacent edge of the opposite side plate, and means for holding said extension-piece in place when the parts are assembled, said extension lying flush on its outer surface with the face of said face-plate and overlying said face-plate on its inner surface. v

'Signed at New Britain, Connecticut, this 14th day of January, 1904.

L HENRY G. VOIGHT. Witnesses M. S. WIARD, C. E. RUSSELL.

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